That is a North American NA 16 or derivative, the predecessor of the North American T-6 Texan
My guess is it is a BC-1 (NA-36)
Some observations that may help to determine the precise model:
- The fuselage is covered with fabric. Later models used metal
- The trailing edge of the rudder is rounded, later models had a straight rudder
- The bottom corner of the rudder is squared, some other models are rounded (e.g BT-9)
The fuselage shows the crest of the USAAF's Technical Training Command:
Source: Picturing Meteorology